Improvement in composition pavements



material, ,Iemploy the a hot state, and spread the same thoroughly and evenly upon thepavement-surface to be Coated by lmeans of a mop or broom and.. Whileqin this `condition I spread upon the minous material.

UNITED STATES NATHAN B. ABBOTT, OF

iMPRovEMgNT'I'N COMPOSITION PAvEMENT's.

`Specification forming part of LettersPatent Now139,848, dated June 17,

' September 24, 1872.

To all whom it may concern:

Beit known that I, NATHAN B. ABBOTT,

` of Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Composition Pavements, of which the following is a specification:

This invention relates to an improved surface for composition pavements.

The foundation or body ofthe pavement is to be laid in the ordinary manner and of the required thickness, according to the use for which it is intended. A reference is hereby made to patents No. 88,1321l and N o. 93,280 as descriptive of composition pavements; and my improvements are available with all pavements of this class. V

It is sometimes found that pavements of the class referredy to become disintegrated, in the surface especially, and require repairs. My invention is for preventingthe disil'itegration, and thereby renderingl the pavement more durable, and also for repairing and surfacing old or injured pavements. n

I makeuse of a composition composed of tar and creosote, substantialliynsuch as set forth in my patent No. 112,764, but instead of mixing with the same sandulgravel, ashes, or other 'tuininous material in bituminous material a layer of grit, Ofnearly uniform thickness, proportioned to the "bitu- This grit is composed of small, hard, clean stones'of approximate uni- PATENT OEEIOE BROOKLYN, NEWA YORK.

1873; application filed k formV size, the same being separated `by `a 'sieve of about a quarter of an inch meshvto remove the larger stones, and by a screen of about an eighth of au inch mesh to allow the 1 fall awayfrom the" finer or dusty particles to grit. i y

The surface may be rolledto press the grit into the bituminous material and consolidate the same.

A pavement formed in this manner is very; r

durable, because the wear comes upon the v particles of grit, and there is not dust, neither is there any tendency to break the particles i of bituminous material oi'and injure the pave-` ment and form dust thereof, and the strong tenacious bituminous material aforesaid becomes a bond of union betweenthe particles of grit, and effectually excludes moisture from,`

the foundation pavement.

It is preferable to employ the. grit `aldry and heated condition.

In the drawing, I have represented my im provement as applied to the composition pave-` ment shown in Letters Patent No. 88,139,0f` 1869. The layer Ofbituminous material and grit is shown at a. i I i A I claim as my inventioni The surface for composition pavements, composed of the bituminous material and grit,

prepared and laid substantially as specified'.

Signed by me this 19th day of September,

NATHAN B. ABBOTT.

Witnesses:

GEO. T. PINOKNE` l GHAs. H. SMIT 

